Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1978. 28p.
Author(s): Schmuck, André; Schmuck, Patrick.- 2009. 43p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1970. 44p.
Author(s): Krell, Claudia; Oldemeier, Kerstin; Austin-Cliff, George.- 2018. 66p.